Piers Morgan tried to woo Vogue creative director Grace Coddington over dinner at the Waverly Inn the other night, but she didn’t recognize the CNN host. While Coddington, who stole the show in the documentary “The September Issue,” was dining with photographer Bruce Weber and others, Morgan came over to introduce himself. A witness relates: “Piers told Grace he wanted to meet her for some time. He told her, ‘You’re my idol, and I loved your documentary.’ ” When the editor looked blank, Morgan pressed on, “You had me in your magazine, remember?” — referring to a profile of him in Vogue’s October issue as he prepared to replace Larry King. Morgan confirmed the incident, telling us: “Then she remembered. Or pretended to. I didn’t mind because Kiefer Sutherland came over and said he’d come on the show. He gave me the Jack Bauer line, ‘Go kill it, Piers.’ ” His show, “Piers Morgan Tonight,” starts on Jan. 17.